Overcoming the Ambient Manufacturability-Scalability-Performance Bottleneck in Colloidal Quantum Dot Photovoltaics

Ahmad R. Kirmani, Arif D. Sheikh, Muhammad Rizwan Niazi, Mohammed Haque, Mengxia Liu, F. Pelayo García de Arquer, Jixian Xu, Bin Sun, Oleksandr Voznyy, Nicola Gasparini, Derya Baran, Tao Wu, Edward H. Sargent, Aram Amassian

Research output: Contribution to journalArticlepeer-review

80 Scopus citations


Colloidal quantum dot (CQD) solar cells have risen rapidly in performance; however, their low-cost fabrication under realistic ambient conditions remains elusive. This study uncovers that humid environments curtail the power conversion efficiency (PCE) of solar cells by preventing the needed oxygen doping of the hole transporter during ambient fabrication. A simple oxygen-doping step enabling ambient manufacturing irrespective of seasonal humidity variations is devised. Solar cells with PCE > 10% are printed under high humidity at industrially viable speeds. The devices use a tiny fraction of the ink typically needed and are air stable over a year. The humidity-resilient fabrication of efficient CQD solar cells breaks a long-standing compromise, which should accelerate commercialization.
Original languageEnglish (US)
Pages (from-to)1801661
JournalAdvanced Materials
Issue number35
StatePublished - Jul 6 2018

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was funded by the King Abdullah University of Science and Technology (KAUST) and the Ontario Research Fund Research Excellence Program. A.R.K. would like to acknowledge Dr. Lee J. Richter at the National Institute of Standards and Technology, Maryland, US for fruitful discussions. M.L. acknowledges support from the Hatch Research Scholarship.


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